Question

Find the area of a triangle with a base of 10 in. and an altitude of 14 in. (The formula for the area of a triangle is A = bh ÷ 2.) A. 24 sq in. B. 70 sq in. C. 280 sq in. D. 140 sq in.

Answer 1

Choice B

Explanation:

We have to find area of triangle.

We have given the base of triangle and altitude of triangle.

From question statement,we observe that

base=b= 10 inches and height=h=altitude= 4 inches

The area of triangle is half of base times the height of triangle.

Area= 1/2×base×height

By putting the values of base and height in above formula,we get

Area = 1/2×10×14

Area = 70 in².

hence, choice B is correct answer.

Answer 2

The correct option is B.

Explanation:

The area of triangle is

`A=(1)/(2)* b* h`

Where, b is the base of the triangle and h is the height of the triangle.

It is given that the base of the triangle is 10 inch and the height of the triangle is 14 inch.

The area of given triangle is

`A=(1)/(2)* 10* 14`

`A=10* 7`

`A=70`

Therefore the area of triangle is 70 square inch and the option B is correct.