0
To find the area of a triangle with side lengths 12 cm, 7 cm, and 10 cm, we can use Heron's formula. First, calculate the semi-perimeter of the triangle by adding the three side lengths and dividing by 2: (12 + 7 + 10) / 2 = 29/2 = 14.5 cm. Then, use Heron's formula: Area = √[s(s-a)(s-b)(s-c)], where s is the semi-perimeter and a, b, and c are the side lengths. Plugging in the values, we get Area = √[14.5(14.5-12)(14.5-7)(14.5-10)] = √[14.52.57.5*4.5] = √2446.25 ≈ 49.46 cm².
* * * * *
That is so wrong!
Let the three sides be a, b and c and let s = (a+b+c)/2
then area = sqrt[s*(s-a)*(s-b)*(s-c)]
So here s = 14.5 cm and so area = sqrt(14.5*2.5*7.5*4.5) = sqrt(1223.4375)
= 34.98 sq cm (to 2 dp)
Add your answer:
Earn +20 pts
Is a 5cm by 12cm a right triangle?
If two sides of a triangle have lengths of 5cm and 12cm, then the third side can have any length that's more than 7cm and less than 17cm. If the third side is 13cm, then the triangle is a right triangle.
A triangle's sides are 4cm 7cm and 9cm what is the area?
Area 51.
What is the area of a triangle if the base is 12Cm and height 7Cm?
The formula to calculate the area of a triangle is 1/2 * base * height. In this case, the base is 12 cm and the height is 7 cm. Plugging these values into the formula, we get 1/2 * 12 cm * 7 cm = 42 square cm. Therefore, the area of the triangle is 42 square cm.
What is the triangles area if the sides are 7cm 7cm and 5cm?
A triangle with side a: 7, side b: 7, and side c: 5 cm has an area of 16.35 square cm.
What is the perimeter of 7cm by 6cm?
Assuming that this is a rectangle, you know that the length (longer side) would be 7cm, and the width (shorter side) would be 6cm. The formula for perimeter is, 2(length) + 2(width) = Perimeter Now we can plug in our numbers, 2(7cm) + 2(6cm) = 14cm + 12cm = 26cm The perimeter would be 26cm, assuming that this is a rectangle ^^
What is the volume that is 10cm 7cm 12cm?
10cm x 7cm x 12cm =840 square cm3
Is a 5cm by 12cm a right triangle?
If two sides of a triangle have lengths of 5cm and 12cm, then the third side can have any length that's more than 7cm and less than 17cm. If the third side is 13cm, then the triangle is a right triangle.
Is it possible for a triangle to have sides with lengths 5cm 7cm and 10cm Explain your answer?
if it is a scalene triangle yes scalene triangle have no congruent sides and angles
What area of a parallelogram with the Base of 10cm and height of 7cm?
70 square cm.
What is the area of a triangle with base 12 cm and height 7cm?
The area of triangle is : 42.0
What is the area of a 6.3 and 7cm triangle?
Two sides of a triangle are not sufficient to determine its area.
What is the perimeter of this shape 7cm x 10cm equal?
The perimeter of a shape is the sum of the lengths of all its sides. In this case, the shape is a rectangle with sides measuring 7cm and 10cm. To find the perimeter, you add up all the sides: 7cm + 7cm + 10cm + 10cm = 34cm. Therefore, the perimeter of this shape is 34cm.
A triangle's sides are 4cm 7cm and 9cm what is the area?
Area 51.
What is the area of a triangle with 11cm 8cm 7cm?
To calculate the area of a triangle with side lengths of 11cm, 8cm, and 7cm, we first need to determine the semi-perimeter of the triangle. The semi-perimeter (s) is calculated by adding all three sides together and dividing by 2, so s = (11 + 8 + 7) / 2 = 13 cm. Next, we can use Heron's formula to find the area of the triangle, which is given by the formula: Area = √[s(s-a)(s-b)(s-c)], where a, b, and c are the side lengths. Plugging in the values, we get Area = √[13(13-11)(13-8)(13-7)] = √[1325*6] = √780 ≈ 27.93 cm².
Is it possible to create a triangle with side lengths 12cm 7cm and 5cm?
No because the sum of the smaller sides must be greater than the longest side
What is the area of a triangle with 5cm and 7cm?
To find the area of a triangle, you can use the formula: Area = 0.5 * base * height. In this case, the base is 5cm and the height is 7cm. Plugging these values into the formula, we get Area = 0.5 * 5cm * 7cm = 17.5 square centimeters. Therefore, the area of the triangle is 17.5 square centimeters.
What is the area of a right triangle that is Cm high and has a base that is 7cm long?
The height has not been given but the area of the triangle is: 0.5*height*base
